Eight-Page Brochure Describes National's Fully Hydraulic Cranes

National Supply's line of fully hydraulic cranes for offshore operations is described in a new eight-page brochure. The three models covered—OS-105, OS-215, and OS-435—offer maximum API load ratings, respectively, of 85,- 900 pounds, 126,000 pounds, and 170,500 pounds. All feature National's innovative variable pressure hydraulic system for optimum operator control and crane safety. Boom hoist, main hoist, and fast line hoist and swing have separate hydrostatic circuits so three functions (swing, boom hoist and main line on whip line hoist) can be operated simultaneously with no loss in speed and power. Unique hydraulic powerdown provision allows control over heaviest loads without assistance from the friction brake, saving unnecessary component wear. The brochure contains five pages of charts and tables giving dimensions, capacities and performance specifications for each of the three crane sizes.

Write to William D. Marmack, National Supply Company, 1455 West Loop South, Houston, Texas 77027, f o r National Pedestal Cranes Bulletin No. 624.

Other stories from September 15, 1977 issue


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